Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/wbRP9P8/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua19034549/57aRE2O",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-121d81ff-5a08-4dc2-bb38-13f1a5e21f5f",
      "cw-2b3b366e-2034-4bb2-a599-69cac987d586"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-830d539c-d78a-427d-868c-725800cb2dbf",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wbRP9P8/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-2b3b366e-2034-4bb2-a599-69cac987d586",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}